3. A distinction should be made between words used parenthetically, and adverbs qualifying particular words; as, “And with learning was united a mild and liberal spirit, too often wanting in the princely colleges of Oxford.”—Macaulay.
“That, too, has its eminent service.”—Burke.
Rule V. Parenthetical Expressions.—Expressions of a parenthetical character should be separated from the rest of the sentence by commas.
EXAMPLES.
“She was tumbled early, by accident or design, into a spacious closet of good old English reading, without much selection or prohibition, and browsed at will upon that fair and wholesome pasturage.”—Lamb.
“He [Sheridan] who, in less than thirty years afterward, held senates enchained by his eloquence and audiences fascinated by his wit, was, by common consent both of parent and preceptor, pronounced a most impenetrable dunce.”—Moore.
“It is clear that Addison’s serious attention, during his residence at the university, was almost entirely concentrated on Latin poetry.”—Macaulay.
REMARKS.
1. A distinction should be made between parenthetical words and parenthetical expressions.